supreme court has recognized a limited exception to it's miranda ruling when police or the public are in imminent danger. >>> a new folk hero has emerged out of the terrible weekend. his name is dave hannaberry. he is the guy who found the suspect in his boat in his backyard. the internet is all abuzz to send him a giant thank you gift. here's abc news reporter gio. >> it's the now famous little boat that kept a big secret. the unlikely hideout for america's most wanted man. and this is the boat's owner. david hannaberry, a man now called the hero for finding the suspected marathon are bomber and calling 911. >>water town's chief of police was at the scene. >> what happened when your officers arrived? >> there was a shooting. >> that shooting so damaged the boat. >> his neighbors said, >> he's completely shocked, and he says my poor boat, my poor boat. he's taken care of that boat meticulously since he had it and now it's full of holes. >> now a digital show of support. people from all over the nation are turning to social media sites like facebook raising money to buy him a new boat.